Normally you should be able to run any kind of catvbs, obfuscated or not, maybe mistake is somewhere else.
I have this code in CATScript and is running OK, should work also in catvbs.
Sub CATMain()
Dim EmptyPar()
Dim ScPath
ScPath = "C:\Temp"
CATIA.SystemService.ExecuteScript Scpath, catScriptLibraryTypeDirectory, "Test.CATScript", "CATMain", EmptyPar
End Sub